an increasing trendp < 0.001
Results Vegetation cover changes during 1982 to 2020 in the Tibetan plateau As shown in Figure 3 , between 1982 and 2020, nearly 89% of the alpine ecosystem in the Tibetan Plateau showed an increasing trend in vegetation cover, with a rate of change of 0.0019 per year for VCI ( p < 0.001) and 0.0096 per year for LAI ( p < 0.0001).